jackson



(ModeL) 2 Sheets-Sheet 2.

W. JACKSON.

SEWING MACHINE.

Patented June 7, 1887.

jn/vezgior Willa am f? Jwkon.

UNITED STATES PATENT OFFICE.

- WILLIAM J AOKSON, OF PIMLIOO, COUNTY OF MIDDLESEX, ENGLAND.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 364,517, dated June '7, 1887.

Application filed June 30, 1885. Serial No. 170.282. ()Iodel.) Patented in England May 26, i884, No. 8,907. and in France March 30, 1885,No. 155,367.

To all whom, it may concern:

Be it known that 1, WILLIAM JAoKsoN, a subject of the Queen of Great Britain, residing at No.11 Caroline Place, Eaton Squ are,Pimlico, in the county of Middlesex, England, sewin ganachine manufactn rer, have invented new and useful Improvements in the Construction of Sewing-Maehines,(for which I have obtained a patent in Great Britain, No. 8.207, dated May 26,1884, and in France, No. 155,367,dated March 30, 1885,) of which the following is a specification.

My invention consists in certaiunovel fea tures of construction and combinations of parts, whereby I provide an improved machine for sewing the soles of boots or shoes, the purpose of my invention being to simplify the con struction, reduce the cost of manufacture, and to render the machine capable of more rapid and better operation and more durable in use.

Referring to the drawings forming part of this application, Figure 1 is a side elevation of the machine. Fig. 2 is a partial front elevation. Fig. 3 is a horizontal section of Fig. 1 in the line as 0:. Fig. 4 is a vertical section in the line y y, Fig. 1. Fig. 5 is a detail view. Fig. 6 is a longitudinal section of the horn and spindle. Fig. 7 is an elevation of the spindle detached from the horn.

In the said drawings, the referencenumerall designates the frame of the machine,in which is journaled a vertical driving shaft, 2, having a gear, 3, and carrying a cam, 4, having a eamrace, 5. On the same shaft beneath the cam 4 is mounted a cam, 6, while upon the upper extremity of said shaft is mounted a cam, 7.

The needle 8 is carried by a needle-bar, 9, moving in ways 10, said bar having a pin, 11, which runs in the cam-race 5. This race is provided with a rest or dwell, 5, at its lowest point and extending about one-half a circumference, enabling the needle to remain at its lowest point until the thread is passed into its barb or hook.

Upon one side of the needle-bar is arranged the presser-bar 12, which carries the foot 13, the bar sliding in ways formed in lugs 14,projecting from the frame, Figs. 2 and t. In the way formed in the upperlug is a pin, 15,lying In a slot, 16, in the presser-bar, and in the gnideway of the lower lug is a leaf-spring, 17, attached to the bar 12, and bearing against the lug by which the foot 13 is normally thrown outward away from the needle.

Upon the lower lug, 14, is pivoted a centrally-pivoted lever, 18, one end of which bears against the edge of the bar 12, while the other end is provided wit-h a friction-roll, 19, engaging with the cam 6 on the workingshaft 2. This cam is so timed that it engages with the roll 19 when the needle is nearly at its highest point, thereby rocking the lever and throwing the foot 13 toward the needle eflecting the feed movement. As the cam moves 0E the roll the spring 17 throws the foot 13 away from the needle preparatory to a new feed movement. The former movement takes place as the needle approaches its upward limit of movement, the cam 6 being long enough to hold the lever until the needle has risen.

Upon the upper part of the frame is mounted a lever, 20, having upon one end springs 21 and 22, the lower end of the former being connected to the frame-work and that of the latter to an arm, 23, on the presser-bar 1.2. Upon the lever 20,011 the opposite side of its fulcrum, is mounted a frictiona'oll, 24, upon which the cam 7 acts, the engagement taking place at the moment when the cam 6 is approaching the point-where it leaves the roll 19 on the lever 18. The action of cam 7 throws the outer end of thelever 20 upward, and the spring 22 causes the presser-bar to rise slightly to disengage it from the cloth. The cam G then passes 011' the lever 18, allowing the spring 17 to throw the foot 13 backward, while it is upheld by the lever 20.

Encircling the needle is a cast-off, 25, for protecting the last preceding loop of the sowing-thread from being caught in the hook. I

This castoff is carried by a bar, 26, Figs. 3 and 4, moving in the lug 14, and having a pin, 27, passing through it, on which rests a spiral spring, 28, encircling the bar 26. Upon the needle-bar is mounted an adjustable block, 29, having a screw, 30, which at a given point in the downward movement of the needle engages the upper end of the spring 28 and carries the bar 26 downward. At a point just above the top of the block 29 is placed a pin,

31, projecting from the bar 26 over said block. The downward movement of the needle-bar not only carries the cast-off down with it, but holds it down by the compression of spring 28, the cast-off remaining stationary until the upward movement of the needle-bar engages the block 29 with the pin 31,which takes place just as the barb of the needle is lifted far enough to be protected by the cast-off, when both move upward together.

Upon the foot'plate 1" is swivelcd a plate, 32, on which is mounted rigidly the horn 33. This horn consists of a hollow inclined tube having an opening, 33, at its upper end, and a slot or opening, 34, in its lower inclined face. The plate 32 is swiveled upon a standard, 35, having a gear, 36, meshing with a similar gear, 3, on the main shaft, the gear 36 also meshing with a gear, 33, journaled on the under face of the plate 32, whereby rotary movement in both directions is allowed the plate without affecting the action of said gearing.

Within the horn 33 is placed the spindle 39, held in place by a set-screw, 40, having its point running in a slot, 41, in the spindle. On the foot of the latter is mounted a mitergear, 42, meshing with the gear 38. The spin dle consists of an open-ended tube, its upper end beingbcneath and in line with the opening 33 in the horn. Upon its side are formed two openings, a large one, 43, and a smaller, 44, above it, a shallow groove, 45, being formed in the outer surface of the spindlebetween the two perforations.

The thread is taken from a spool mounted upon any suitable support, and is carried through a wax-pot, 46, mounted beneath the horn. This pot has a central tube, 47, in which is placed a Bunsen or other burner, to keep the wax plastic, and inside the pot is r011 under which the thread passes, being thence carried through an eye, 48, and then into the lower end of the spindle. From the interior of the latter it passes out through the larger opening 43 into the groove 45, and thence through the smaller opening 44, and thence out of the open end of the spindle. As the hooked needle descends the spindle revolves,

carrying the threads across the needle and over the barb.

The device shown in Fig. 5 may be substituted for the presser-foot, if desired.

The height to which the presser-foot is raised may be regulated by a set-screw, 49, passing through the end of the lever 20, and bearing with its point upon the top of the machineframe.

WVhat I claim is- 1. The combination, with the hooked necdle carried by the reciprocating needle-bar, of the rotating hollow spindle having threadopenings at its upper end," and a horn within which the spindle rotates, substantially as described.

2. The combination, with the feed-foot 13 and bar 12, having slot 16, of the pin 15, spring 17, lever 18, having frictional roll 19, cam (i, lever 20, having friction-roll 24, the

springs 21 22, connecting said lever with the bar 12 andwith the frame of the machine, and the cam 7, substantially as described.

3. The combination, with the needle having a hooked point, of the tubular rotating spindle 39, having the openings 43 and 44, and the groove 45, the swivelcd tubular horn 33, having openings 33 and 34, and means for giving continuous rotation to the spindle during the reciprocation of the needle, substantially as described.

In testimony whereof I have hereunto set my hand this 12th day of June, 1885.

\V ILLIAM JACKSON.

Witnesses:

Gno. O. DOWNING.

8 Quality 01;, London, W. C. J NO. DEAN,

17 G raccchurc/z. S1,, London, C. 

